.video-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    max-height: 380px;
    margin: 0 auto;
    overflow: hidden;
    padding: 20px;
}

video {
    width: 100%;
    height: auto;
}

/* 覆盖页面 */
.overlay {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 95%;
    height: 95%;
    background: rgba(209, 203, 203, 0.173);
    color: rgb(16, 53, 147);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1;

}

.overlay .titlee {
    position: absolute;
    top: 15%;
    font-family: 'Rubik', sans-serif;
    color: black;


}

.overlay a {
    text-decoration: none;
}

.overlay a button {
    text-decoration: none;
    border: 0.5rem outset rgba(51, 5, 233, 0.879);
    font: bold 1rem sans-serif;
    margin: 2rem;
    padding: 1rem;
    outline-offset: 0.5rem;
    border-radius: 30%;
    padding: 10px;
    background-color: #b3b5cf2a;
    cursor: pointer;

}

button.kaishi:hover {
    background: rgba(78, 78, 85, 0.494);
    transform: translate(0, 0.25em);
}

button.kaishi:hover::before {
    box-shadow: 0 0 0 2px rgba(78, 78, 85, 0.494), 0 0.5em 0 0 rgba(78, 78, 85, 0.494);
    transform: translate3d(0, 0.5em, -1em);
}

button.kaishi:active {
    background: rgba(78, 78, 85, 0.494);
    transform: translate(0em, 0.75em);
}

button.kaishi:active::before {
    box-shadow: 0 0 0 2px rgba(78, 78, 85, 0.494), 0 0 rgba(78, 78, 85, 0.494);
    transform: translate3d(0, 0, -1em);
}

.overlay .introduce {
    position: absolute;
    top: 65%;
    color: rgb(152, 18, 189);
}

.overlay .introduce {
    text-shadow:
        0 0 5px #00ffff,

        0 0 10px #efb421,

        0 0 20px #7bff00,

        0 0 30px #5168ed,

        0 0 40px #433fb0,

        0 0 70px #00ffff,

        0 0 80px #00ffff,
        0 0 100px #00ffff;

    font-weight: bold;
}

.overlay .introduce span {

    display: inline-block;

    width: 30px;

    height: 30px;

    margin: 2px;



    border: 1px solid #000;

    border-radius: 5px;



    background-color: #b4b6bc;

    color: #333;

    font-size: 16px;

    line-height: 35px;

    text-align: center;

    text-shadow: none;
}

/* 图标 */
.overlay .icon1 {
    position: absolute;
    left: 0%;
    bottom: 0%;
}

.overlay .icon-button1 {
    position: absolute;
    left: 0%;
    bottom: 0%;
    width: 100%;
    /* height: 30px; */
    background-color: #ffffff00;
    border: none;
    cursor: pointer;
}

/* 弹窗 */

/* 弹窗的样式 */
.modal {
    display: none;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.4);
}

/* 弹窗内容的样式 */
.modal-content {
    overflow-y: scroll;
    background-color: #e4e6cf;
    color: #ffffff;
    margin: 5% auto;
    padding: 20px;
    border: 4px solid #7f8ff4;
    border-radius: 15px;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2);
    width: 80%;
    max-width: 300px;
    height: 25%;
    font-family: 'Comic Sans MS', cursive, sans-serif;
}

/* 弹窗的关闭按钮 */
.close {
    color: #ff2600;
    float: right;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover,
.close:focus {
    color: #f8fdff;
    text-decoration: none;
    cursor: pointer;
}

/* 弹窗标题的样式 */
.modal-title {
    font-size: 24px;
    color: #0066cc;
    border-bottom: 2px solid #0066cc;
    padding-bottom: 5px;
    margin-bottom: 15px;
}

/* 弹窗内容的样式 */
.modal-body {
    font-size: 18px;
    color: #0066cc;
    line-height: 1.6;
}

.modal-body .other-introduce {
    color: #84888d;
    letter-spacing: 1.8px;

}

/* 定义动画名称为 modalAnimation */
@keyframes modalAnimation {
    from {
        transform: scale(0.5);
        /* 开始于较小的尺寸 */
        opacity: 0;
        /* 开始于完全透明 */
    }

    to {
        transform: scale(1);
        /* 结束于正常尺寸 */
        opacity: 1;
        /* 结束于完全不透明 */
    }
}

/* 应用动画到 .modal-content */
.modal-content {
    animation-name: modalAnimation;
    /* 指定动画名称 */
    animation-duration: 0.5s;
    /* 动画持续时间 */
    animation-fill-mode: forwards;
    /* 动画完成后保持最后一帧 */
}

.overlay .icon3 {
    position: absolute;
    right: 18%;
    top: 0%;
}

.overlay .icon5 {
    position: absolute;
    right: 9%;
    top: 0%;
}

.overlay .icon4 {
    position: absolute;
    right: 0%;
    top: 0%;
}